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壳聚糖的吸附行为及其FTIR光谱研究
引用本文:黄中华,孙秀云,李燕,葛玮,王俊德.壳聚糖的吸附行为及其FTIR光谱研究[J].光谱学与光谱分析,2005,25(5):698-700.
作者姓名:黄中华  孙秀云  李燕  葛玮  王俊德
作者单位:南京理工大学化工学院,江苏,南京,210014
摘    要:用自制的壳聚糖对几种酸性染料和碱性染料模拟废水进行了吸附行为的研究,考察了吸附时间、壳聚糖脱已酰度及废水pH值对吸附效果的影响。研究表明,在吸附开始的20min内,壳聚糖对碱性品红和番红花红的吸附已基本达到平衡,且用量只为活性炭用量的2/3的情况下,对染料的吸附效果与活性炭几乎相当;它对酸性大红的吸附过程呈现一级反应动力学特征。文章还采用傅里叶变换红外光谱对壳聚糖吸附染料的机理进行了探讨,研究发现,壳聚糖分子中存在的大量羟基参与了对碱性品红和番红花红的吸附。

关 键 词:壳聚糖  FTIR  染料  废水处理  吸附
文章编号:1000-0593(2005)05-0698-03
修稿时间:2003年9月6日

Adsorption Behaviors of Chitosan and the Analysis of FTIR Spectra
HUANG Zhong-hua,SUN Xiu-Yun,LI Yan,GE Wei,WANG Jun-de.Adsorption Behaviors of Chitosan and the Analysis of FTIR Spectra[J].Spectroscopy and Spectral Analysis,2005,25(5):698-700.
Authors:HUANG Zhong-hua  SUN Xiu-Yun  LI Yan  GE Wei  WANG Jun-de
Institution:College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
Abstract:This paper studied the adsorption behavior of lab-made chitosan for acid dyeing waste water and basic dyeing waste waters, based on the effects of adsorbing time, deacetylation degree of chitosan, and pH of waste water. The results showed that the (adsorption) of basic fuchsin and saffron by the chitosan almost reached equilibrium state in 20 min. The adsorption capacities of the chitosan for dyes was comparable with activated carbon. Moreover, its dosages were only 2/3 of the latter. The adsorption process for Acid Red (presented) a dynamics character of first order reaction. FTIR spectroscopy was used to analyze the adsorption mechanisms of chitosan for different kinds of dyes. It was found that a great deal of hydroxide radicals in the chitosan molecule participated in the adsorption of basic fuchsin and saffron.
Keywords:Chitosan  FTIR  Dyes  Waste water treatment  Adsorption
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